CBSE BOARD XII, asked by atidumqwajilr4225, 1 year ago

Bleaching action of SO2 is not permanent why?

Answers

Answered by khushi3097

Answer:

It removes oxygen from the dye. However, the atmospheric oxygen slowly reoxides the bleached material, because of which the bleached material changes to its original colour. This is why bleaching by sulphur dioxide is not permanent.........✌✌✌✌

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